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Diffstat (limited to 'agg/inc/agg_renderer_raster_text.h')
| -rwxr-xr-x | agg/inc/agg_renderer_raster_text.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/agg/inc/agg_renderer_raster_text.h b/agg/inc/agg_renderer_raster_text.h new file mode 100755 index 000000000000..957944600332 --- /dev/null +++ b/agg/inc/agg_renderer_raster_text.h @@ -0,0 +1,264 @@ +//---------------------------------------------------------------------------- +// Anti-Grain Geometry - Version 2.3 +// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) +// +// Permission to copy, use, modify, sell and distribute this software +// is granted provided this copyright notice appears in all copies. +// This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. +// +//---------------------------------------------------------------------------- +// Contact: mcseem@antigrain.com +// mcseemagg@yahoo.com +// http://www.antigrain.com +//---------------------------------------------------------------------------- + +#ifndef AGG_RENDERER_RASTER_TEXT_INCLUDED +#define AGG_RENDERER_RASTER_TEXT_INCLUDED + +#include "agg_basics.h" + +namespace agg +{ + + //==============================================renderer_raster_htext_solid + template<class BaseRenderer, class GlyphGenerator> + class renderer_raster_htext_solid + { + public: + typedef BaseRenderer ren_type; + typedef GlyphGenerator glyph_gen_type; + typedef typename glyph_gen_type::glyph_rect glyph_rect; + typedef typename ren_type::color_type color_type; + + renderer_raster_htext_solid(ren_type& ren, glyph_gen_type& glyph) : + m_ren(&ren), + m_glyph(&glyph) + { + } + + //-------------------------------------------------------------------- + void color(const color_type& c) { m_color = c; } + const color_type& color() const { return m_color; } + + //-------------------------------------------------------------------- + template<class CharT> + void render_text(double x, double y, const CharT* str, bool flip=false) + { + glyph_rect r; + while(*str) + { + m_glyph->prepare(&r, x, y, *str, flip); + if(r.x2 >= r.x1) + { + int i; + if(flip) + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->blend_solid_hspan(r.x1, i, (r.x2 - r.x1 + 1), + m_color, + m_glyph->span(r.y2 - i)); + } + } + else + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->blend_solid_hspan(r.x1, i, (r.x2 - r.x1 + 1), + m_color, + m_glyph->span(i - r.y1)); + } + } + } + x += r.dx; + y += r.dy; + ++str; + } + } + + private: + ren_type* m_ren; + glyph_gen_type* m_glyph; + color_type m_color; + }; + + + + //=============================================renderer_raster_vtext_solid + template<class BaseRenderer, class GlyphGenerator> + class renderer_raster_vtext_solid + { + public: + typedef BaseRenderer ren_type; + typedef GlyphGenerator glyph_gen_type; + typedef typename glyph_gen_type::glyph_rect glyph_rect; + typedef typename ren_type::color_type color_type; + + renderer_raster_vtext_solid(ren_type& ren, glyph_gen_type& glyph) : + m_ren(&ren), + m_glyph(&glyph) + { + } + + //-------------------------------------------------------------------- + void color(const color_type& c) { m_color = c; } + const color_type& color() const { return m_color; } + + //-------------------------------------------------------------------- + template<class CharT> + void render_text(double x, double y, const CharT* str, bool flip=false) + { + glyph_rect r; + while(*str) + { + m_glyph->prepare(&r, x, y, *str, !flip); + if(r.x2 >= r.x1) + { + int i; + if(flip) + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->blend_solid_vspan(i, r.x1, (r.x2 - r.x1 + 1), + m_color, + m_glyph->span(i - r.y1)); + } + } + else + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->blend_solid_vspan(i, r.x1, (r.x2 - r.x1 + 1), + m_color, + m_glyph->span(r.y2 - i)); + } + } + } + x += r.dx; + y += r.dy; + ++str; + } + } + + private: + ren_type* m_ren; + glyph_gen_type* m_glyph; + color_type m_color; + }; + + + + + + + //===================================================renderer_raster_htext + template<class ScanlineRenderer, class GlyphGenerator> + class renderer_raster_htext + { + public: + typedef ScanlineRenderer ren_type; + typedef GlyphGenerator glyph_gen_type; + typedef typename glyph_gen_type::glyph_rect glyph_rect; + + class scanline_single_span + { + public: + typedef agg::cover_type cover_type; + + //---------------------------------------------------------------- + struct const_span + { + int x; + unsigned len; + const cover_type* covers; + + const_span() {} + const_span(int x_, unsigned len_, const cover_type* covers_) : + x(x_), len(len_), covers(covers_) + {} + }; + + typedef const const_span* const_iterator; + + //---------------------------------------------------------------- + scanline_single_span(int x, int y, unsigned len, + const cover_type* covers) : + m_y(y), + m_span(x, len, covers) + {} + + //---------------------------------------------------------------- + int y() const { return m_y; } + unsigned num_spans() const { return 1; } + const_iterator begin() const { return &m_span; } + + private: + //---------------------------------------------------------------- + int m_y; + const_span m_span; + }; + + + + //-------------------------------------------------------------------- + renderer_raster_htext(ren_type& ren, glyph_gen_type& glyph) : + m_ren(&ren), + m_glyph(&glyph) + { + } + + + //-------------------------------------------------------------------- + template<class CharT> + void render_text(double x, double y, const CharT* str, bool flip=false) + { + glyph_rect r; + while(*str) + { + m_glyph->prepare(&r, x, y, *str, flip); + if(r.x2 >= r.x1) + { + m_ren->prepare(r.x2 - r.x1 + 1); + int i; + if(flip) + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->render( + scanline_single_span(r.x1, + i, + (r.x2 - r.x1 + 1), + m_glyph->span(r.y2 - i))); + } + } + else + { + for(i = r.y1; i <= r.y2; i++) + { + m_ren->render( + scanline_single_span(r.x1, + i, + (r.x2 - r.x1 + 1), + m_glyph->span(i - r.y1))); + } + } + } + x += r.dx; + y += r.dy; + ++str; + } + } + + private: + ren_type* m_ren; + glyph_gen_type* m_glyph; + }; + + + + +} + +#endif + |